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