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