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