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