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