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