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)(18,23)(19,24)(21,29)(27,30)(33,34)(35,39)(36,46)(37,41)(38,42)(40,45)(43,48)(44,47) involution — undirected(2,7)(3,9)(10,15)(11,16)(18,23)(19,24)(25,31)(26,32)(35,43)(36,45)(39,48)(40,46) involution — undirected(17,18,22,23)(19,20,24,28)(21,25,29,31)(26,27,32,30)(33,35)(34,39)(36,44)(37,45)(38,43)(40,41)(42,48)(46,47)(1,3,6,9)(2,8,7,4)(5,11,14,16)(10,13,15,12)(17,19)(18,20)(21,26)(22,24)(23,28)(25,27)(29,32)(30,31)(33,36,38,45)(34,40,42,46)(35,44,43,37)(39,41,48,47)(1,4,6,8)(2,9,7,3)(5,13,14,12)(10,11,15,16)(17,20)(18,24)(19,23)(21,30)(22,28)(25,26)(27,29)(31,32)(33,37,38,44)(34,41,42,47)(35,45,43,36)(39,40,48,46)(1,5,6,14)(2,10,7,15)(3,11,9,16)(4,12,8,13)(17,21,22,29)(18,25,23,31)(19,26,24,32)(20,27,28,30)(33,34)(35,39)(36,40)(37,47)(38,42)(41,44)(43,48)(45,46)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.