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