One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,10)(3,7,11,8)(4,5,9,15)(12,13,16,14)(17,18)(19,26)(20,22)(21,24)(23,25)(27,28)(29,31)(30,32)(33,34)(35,40)(36,39)(37,41)(38,42)(43,45)(44,47)(46,48)(1,3)(2,7)(4,12)(5,13)(6,11)(8,10)(9,16)(14,15)(17,19,23,21)(18,24,25,26)(20,29,30,27)(22,28,32,31)(33,35)(34,37)(36,43)(38,41)(39,46)(40,42)(44,48)(45,47)(3,11)(7,8)(12,16)(13,14)(18,25)(20,30)(24,26)(27,29)(36,44)(39,47)(43,48)(45,46) involution — undirected(1,3)(2,8)(4,12)(5,14)(6,11)(7,10)(9,16)(13,15)(17,20,23,30)(18,22,25,32)(19,27,21,29)(24,31,26,28)(33,36)(34,39)(35,43)(37,46)(38,44)(40,45)(41,48)(42,47)(1,4)(2,5)(3,12)(6,9)(7,13)(8,14)(10,15)(11,16)(17,21,23,19)(18,26,25,24)(20,29,30,27)(22,28,32,31)(33,35)(34,40)(36,43)(37,42)(38,41)(39,45)(44,48)(46,47)(1,5)(2,9)(3,13)(4,10)(6,15)(7,16)(8,12)(11,14)(17,22)(18,20)(19,28)(21,31)(23,32)(24,29)(25,30)(26,27)(33,37,38,40)(34,41,42,35)(36,45,44,46)(39,43,47,48)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.