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