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