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