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