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