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