One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,7,11,5)(4,8,14,16)(10,15,12,13)(17,18,21,25)(19,23,27,22)(20,24,29,28)(26,31,32,30)(33,34)(35,39)(36,40)(37,45)(38,42)(41,46)(43,48)(44,47)(1,3)(2,7)(4,10)(5,9)(6,11)(8,15)(12,14)(13,16)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,31)(29,32)(33,35,38,36)(34,39,42,40)(37,43,46,44)(41,47,45,48)(1,3,6,11)(2,7,9,5)(4,12,14,10)(8,13,16,15)(17,18,21,25)(19,22,27,23)(20,28,29,24)(26,31,32,30)(33,34,38,42)(35,40,36,39)(37,45,46,41)(43,47,44,48)(1,3)(2,7)(4,12)(5,9)(6,11)(8,13)(10,14)(15,16)(17,18)(19,22)(20,24)(21,25)(23,27)(26,30)(28,29)(31,32)(33,36,38,35)(34,40,42,39)(37,44,46,43)(41,48,45,47)(1,4)(2,8)(3,10)(5,13)(6,14)(7,15)(9,16)(11,12)(17,19)(18,23)(20,26)(21,27)(22,25)(24,31)(28,30)(29,32)(33,34)(35,40)(36,39)(37,41)(38,42)(43,48)(44,47)(45,46) involution — undirected(1,5,6,7)(2,3,9,11)(4,13,14,15)(8,10,16,12)(17,20)(18,24)(19,26)(21,29)(22,30)(23,31)(25,28)(27,32)(33,37,38,46)(34,41,42,45)(35,43,36,44)(39,47,40,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.