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