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