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