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