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