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