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)(17,18,23,22)(19,28,30,24)(20,26,31,25)(21,32,29,27)(33,34)(35,43)(36,41)(37,42)(38,39)(40,46)(44,48)(45,47)(1,3)(2,7)(4,12)(5,13)(6,11)(8,10)(9,16)(14,15)(17,19)(18,24)(20,21)(22,28)(23,30)(25,32)(26,27)(29,31)(34,39)(40,43)(41,42)(47,48) involution — undirected(3,11)(7,8)(12,16)(13,14)(17,20,23,31)(18,25,22,26)(19,21,30,29)(24,32,28,27)(33,34)(35,40)(36,41)(37,42)(38,39)(43,46)(44,47)(45,48)(1,3)(2,8)(4,12)(5,14)(6,11)(7,10)(9,16)(13,15)(17,20)(18,26)(19,29)(21,30)(22,25)(23,31)(24,32)(27,28)(33,35,38,46)(34,40,39,43)(36,44,37,45)(41,47,42,48)(1,4)(2,5)(3,12)(6,9)(7,13)(8,14)(10,15)(11,16)(17,21,23,29)(18,27,22,32)(19,20,30,31)(24,26,28,25)(33,36,38,37)(34,41,39,42)(35,44,46,45)(40,47,43,48)(1,5)(2,9)(3,13)(4,10)(6,15)(7,16)(8,12)(11,14)(17,22,23,18)(19,28,30,24)(20,26,31,25)(21,27,29,32)(33,37,38,36)(34,42,39,41)(35,45,46,44)(40,48,43,47)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.